I think its a great idea, though i think instead of scavengers, put wastelanders insead. becuase of the fact of there health is so high, and because of the endurence,(when its high you can be out in storms).
But its an awesome idea, would be cool to have things like this in the mod
*edit*
Okay, after talking about it... it might be a great idea for the wastelanders. because of the fact they they aer the tanks of the mod, and it would encurage people to use that class more often, And maybe encurage more raiding and gard duty in the game.